this is something that works great for me when snapshooting, 1.you peek your head out quick!! i mean like under one second get a glimpse of what you will be shooting at..2..get tight behind your bunger and aim as if there was no bunker...3.have you gun close..4.while you are snapping start shotting brfore your marker leaves the bunker so you will have already started shooting by the time you are vulnerable to the enemy.